DE102010027012A1 - Hard hat, especially for forestry workers - Google Patents

Abstract

Described is a protective helmet with a helmet shell (36) and with an interior trim assembly (40) comprising at least one carrier basket (42), a headband (44) and a neck band (46). For spacing the assembly (40) to the helmet shell (36) serve three support arms (54, 55, 56). Between the interior trim assembly (40) and the helmet shell (36) so a space (60) is provided for receiving ear defenders (35a, 35b) and mounting brackets (37a, 37b) of a hearing protector (34) and other helmet accessories. The ear protection (34) can be pivoted when not in use under the helmet shell (36). The protective helmet (30) therefore offers obstacles such as branches and the like. No attack possibilities. The support arms (54, 55, 56) guide a force acting on the helmet (30) from above partially back into the helmet shell (36) to elastically deform. The helmet (30) therefore has improved shock absorption capability.

Description

The invention relates to a protective helmet, in particular for forestry workers, with a helmet shell, with an interior comprising a head-contacting assembly at least from a carrying basket, a headband and a neck band, and means for securing this assembly to the helmet shell.

A hard hat of this artist from the document DE 8714490 U1 known. This known protective helmet is a basic helmet, which can be adapted to different tasks under different operating conditions by changing attachment elements. The helmet consists of a helmet shell and a minimum interior trim. The interior consists of a cruciate ligament, with which the helmet is worn on the head and which ensures an impact-resistant distance between the head and the helmet shell. The helmet has on its outer circumference on the side and the rear part of the helmet comprehensive projection containing four recesses for attachment of the cruciate ligament and other recesses for attachment of additional attachments at the bottom. The basic version of the helmet can be used without any accessories as a simple universal helmet. The additives can be added or removed as needed. At the widest points of the helmet there is a recess on the outside of the projection surrounding most of the helmet. This is the attachment point of a face and ear protection. This protection consists of a visor and two earmuffs, each comprising a wire hanger and a hearing protection capsule. The face and ear protectors are fastened to the exterior of the helmet by a common connector plugged into the projection. The disadvantage of such a helmet equipped so that in the event of obstacles that move past the helmet, get caught behind the temples of the ear defenders and / or the visor and hinder the wearer of the helmet during use or tear him the helmet off his head and the Thereby endanger carriers.

Other documents that describe the attachment of helmet accessories such as face and / or ear protection on the outside of a protective helmet, are DE 28 26 636 C2 . DE 29 07 056 A1 . DE 33 14 595 C2 . DE 35 90 667 C2 . DE 97 10 596 U1 and DE 297 08 134 U1 , In the case of the protective helmets known from these documents, the wearer of the helmet can likewise be hindered or endangered during use if obstacles are caught on the temples of the hearing and / or face protection.

Other documents that deal with the inter-attachment of the trim assembly and helmet shell, but not with the attachment of helmet accessories on the outside of the helmet shell, are listed below.

From the document DE 10 2004 004 044 B4 For example, a protective helmet is known in which the interior equipment, which comprises a head-contacting assembly of a carrying basket, a headband and a neck band, has connecting elements which are inserted into a shield, which in turn is fastened to the lower edge of the helmet shell.

From the document DE 69811738 T2 is known a protective helmet in which the interior, which comprises a head-contacting assembly of a carrying basket, a headband and a neck band, is secured by means of anchor straps, which are inserted into slots at the bottom of a double-walled helmet shell in four places. The headband is made of a flexible material that can easily adapt to the size and shape of the wearer's head.

From the document WO 2005/027671 A1 a safety helmet is known, in which in the helmet shell, a shock absorption unit is arranged, which surrounds the rest of the interior, comprising a head-contacting assembly of a carrying basket, a headband and a neck band. On the inside of the helmet shell projections are present, to which the shock absorption unit and the interior trim assembly can be fastened by means of screws. In this known safety helmet, the shock absorption unit is formed so thick that it is possible to provide in its outer side opposite the helmet inner side a recess in which a transmitter / receiver can be accommodated with an outwardly leading connection line.

All known protective helmets, which are mentioned above, have in common that a force acting from the outside on the helmet force on the interior and in particular via a carrier basket formed from a cruciate ligament is transmitted substantially fully on the head of the home wearer. The cruciate ligament can only fulfill a shock absorption function to a certain extent because it also has the task of holding the helmet firmly on the wearer's head. Accordingly, there is also a need for a protective helmet with improved shock absorption capability.

The object of the invention is to form a protective helmet of the type mentioned above and known from the first-mentioned document so that with improved shock absorption the risk is eliminated that the helmet by him attached helmet accessories such as face and / or ear protection in use on obstacles and that the helmet is particularly suitable for use in forestry.

This object is inventively achieved in that the fastening means comprise at least three support arms designed as spacers and that the helmet shell is dimensioned and the support arms are dimensioned and arranged so that between the interior trim assembly and the helmet shell, a space is available for receiving ear protection capsules and mounting brackets and other home accessories as well as fasteners for at least face and ear protection.

In the protective helmet according to the invention, the fastening devices are at least for a face and a hearing protection within the helmet shell, so that also support bracket and retaining arms of face and hearing protection are within the outline of the helmet, so that on its outside no possibilities for the hooking of obstacles such as branches and the like offers. In addition, if the ear defenders are not needed, they can be pivoted backward within the outline of the helmet so that the helmet provides even less hooking points for obstacles. Since the attachment devices for the face protection are also located in the free space, the visor can be designed such that it does not provide hooking possibilities for obstacles such as knots or the like in the folded-up or folded-down state. The arranged as a spacer between the interior trim assembly and the helmet shell support arms offer the ability to dampen an externally applied to the helmet force already by a deformation of the helmet shell, so that the helmet according to the invention has a better overall shock absorption capacity, because less force on the Head of the carrier is transmitted.

Advantageous embodiments of the protective helmet according to the invention form the subject of the dependent claims.

In one embodiment of the protective helmet according to the invention, the support basket is formed of a rigid, elastically flexible material and the support arms are rigid and formed on the support basket in two temple areas and in the occipital area and collar of the support basket obliquely downwards or backwards and out are each attached with their free ends to the helmet shell. In the protective helmet according to the invention, in this embodiment, the support and the shock absorption function in the support basket made of a stiff, elastically flexible material united. In the fulfillment of the shock absorption function of the support basket is supported by the helmet shell, because the obliquely downwardly or rearwardly projecting arms support with their free ends the basket on the helmet shell from such that at an external pressure on the helmet shell from above the support arms be loaded by the helmet shell to train and endeavor to deform the helmet shell inward.

In a further embodiment of the protective helmet according to the invention, the fastening device for hearing protection on the inside two hearing protection bearing points on the helmet shell, in which mounting brackets are pivotally mounted with ear protection capsules. In this embodiment, in addition to the support brackets and the ear protection capsules and the hearing protection bearing points before external force by obstacles with which the helmet can come into contact, protected.

In a further embodiment of the protective helmet according to the invention, the hearing protection bearing points and the support bracket are arranged and designed so that the support bracket in the space are each pivotable between two positions, an operating position in which the ear protection capsules cover the ears and still within the outline of Helmet shell, and a parking position in which the earmuffs are stowed with the support brackets in the free space. In this embodiment, the mounting bracket and the ear protection capsules in both positions no attack or Einhakpunkte for obstacles.

In a further embodiment of the protective helmet according to the invention, the attachment device for the face protection on the inside of the helmet shell two face protection bearing points, in which two retaining arms of a visor are pivotally mounted. In this embodiment, the support arms and their connection with the visor can be easily formed so that the visor od no hooking or attack opportunities for obstacles such as branches. Like. Offers.

In a further embodiment of the protective helmet according to the invention, the face protection bearing points and the support arms are arranged and designed such that the support arms are pivotable in the free space between two positions, an operating position in which the visor protects the face, and a parking position, in the the visor is arranged snugly against the outer surface of the helmet shell. In this embodiment, the retaining arms can be attached to the visor in such a way that they remain within the outline of the helmet shell and do not provide any points of attack or hooking in for obstacles such as branches or the like.

In a further embodiment of the protective helmet according to the invention, the carrying basket has a circumferentially closed at its lower edge Support strip on which the support arms are formed. In this embodiment, the support arms and the support strip with the remaining part of the carrier basket form an integral component which has the necessary rigidity and nevertheless provides a sufficient shock-absorbing effect.

In a further embodiment of the protective helmet according to the invention, the neck band is attached to the carrying basket and has two ends, which are releasably connected in the neck area by a clamping unit, which is added as a further home accessory in the free space. The neckband is also protected from external influences by obstacles and still accessible for use by the home wearer.

In a further embodiment of the protective helmet according to the invention, the clamping unit on a support shell, which is tensioned during tensioning of the neck band with the aid of a latch flap against the back of a head of a helmet. This embodiment ensures a reliable one-hand operation and also allows to fix the interior trim assembly to the head in a simple manner. The use of a standard chin strap provides additional security.

In a further embodiment of the protective helmet according to the invention, the support arms projecting downwards in the two temples have means for detachable fixation inside the helmet shell. The interior trim assembly can be easily and detachably attached to the helmet shell.

In a further embodiment of the protective helmet according to the invention, the fixing means are formed on each of the downwardly projecting support arms so that they can be brought into positive engagement with the helmet shell. The attachment point of the interior trim assembly on the inside of the helmet shell can be transmitted in a simple way force.

In a further embodiment of the protective helmet according to the invention, the support arm projecting rearwardly in the occipital area has a latching device for fixing to the helmet shell. In this embodiment, the helmet shell may simply have an opening into which the aforementioned support arm is inserted with its free end, so as to be locked to the helmet shell and transmitted through the attachment point force.

In a further embodiment of the protective helmet according to the invention, the face protection bearing points are formed as a plug, which are plugged over the support arms on the rod-like projections. The face shield is so easy to mount and at the same time serves to keep the free ends of the arms attached to the rod-like projections of the helmet shell.

In a further embodiment of the protective helmet according to the invention, the through openings detect the rod-like projections each on a length which is at least as large as the inside diameter of the through openings, so that a load exerted by the helmet from above on the support arms force on the support arms creates a moment that tends to deform the helmet shell inwards to the bottom edge. In this embodiment, the shock absorption function of the interior trim assembly can be supported in a simple manner by elastic deformation of the helmet shell. The passage openings at the free ends of the support arms of the rod-like projections are adapted accordingly to be able to exert a leverage effect on the rod-like projections when force is applied to the helmet shell can.

In a further embodiment of the protective helmet according to the invention, the support basket on two downwardly projecting support arms on which the neck band is fixed in each case at a selectable height. In this way, the fit of the helmet can be easily improved.

In a further embodiment of the protective helmet according to the invention, the support arms and the support arms are additionally stiffened by molded ribs. The power transmission via the attachment point can be secured easily.

Embodiments of the invention will be described in more detail below with reference to the drawings. It shows:

1 in a perspective view and in a view obliquely from below an interior trim assembly of a protective helmet according to the invention,

2 the interior trim assembly after 1 in a view diagonally from above,

3 in a longitudinal sectional view of the interior trim assembly according to 1 used in a helmet shell of the protective helmet according to the invention, also shown in longitudinal section,

4 the helmet shell after 3 without the trim assembly in a bottom view,

5 the helmet shell after 4 in a perspective view in a view obliquely from below,

6 an embodiment of the protective helmet according to the invention, in which it is provided with face and ear protection, in exploded view and partly in section,

7 the hard hat after 6 in a bottom view, in which the face shield, a clamping unit and a hearing protector are shown at a distance from the helmet,

8th An embodiment of the protective helmet according to the invention, in which it has an ear protection, wherein the home shell in cross-section and the ear defenders are shown folded away from the ears,

9 the hard hat after 8th but with the ear protection shown hinged to the ears,

10 the hard hat after 9 in a side view,

11 the hard hat after 10 but where the hearing protector is shown pivoted into a parked position and stowed under the helmet shell,

12 the interior equipment assembly of the protective helmet according to the invention, wherein two ends of a neck band in the neck area are detachably connected by a tensioning unit,

13 in a side view of the protective helmet according to the invention, the interior trim assembly according to 12 built into the helmet shell,

14 the hard hat after 13 in a view from below,

15 a cross-sectional view of the helmet after 13 in the direction of the back,

16 in a partially broken representation of the protective helmet 13 looking towards the front,

17 the hard hat after 13 additionally shown with a visor as a face shield, with the visor opened,

18 a cross-sectional view of the helmet after 17 looking towards the rear,

19 the hard hat after 17 in a broken view, looking towards the front, and

20 in a side view of an embodiment of a protective helmet according to the invention, which is provided with a face shield, a hearing protection and an attached in the back of the head on a neck band tensioning unit.

A total with 30 designated protective helmet according to the invention is in an embodiment which is particularly adapted for use in forestry, in 20 in a side view and in 6 in an exploded view and partially shown in section. The protective helmet 30 includes a total of 32 designated face shield and a total with 34 designated hearing protection. Next includes the hard hat 30 a helmet shell 36 and a total with 40 designated interior trim assembly, which is a carrying basket 42 , a headband 44 and a neckband 46 includes. The neckband 46 is having a total of 48 designated clamping unit equipped. The helmet shell 36 is outside with a ventilation slide 50 provided with which formed in the helmet shell vents 52 can be opened and closed.

As a means to a three-point attachment of the interior or interior trim assembly 40 on the helmet shell 36 serve three formed as spacers support arms 54 . 55 and 56 of which the support arm 55 in 6 is not visible. The helmet shell 36 is dimensioned (that is, in their clear width so long and so wide) and the support arms 54 . 55 and 56 are sized and arranged so that between the interior trim assembly 40 and the helmet shell 36 a free space 60 is present for the inclusion of ear protection capsules 35a . 35b of hearing protection 34 and other helmet accessories as well as fastening devices at least for the face protection 32 and hearing protection 34 , To the other helmet accessories counts the already mentioned clamping unit 48 of the neck band 46 ,

The following are the helmet shell 36 , the interior design assembly 40 , their connection with the helmet shell 36 and then the helmet accessories, the ear protection 34 , the face protection 32 as well as their fastening devices and the clamping unit 48 includes, described in detail and in this order The helmet shell 36 is described below with reference to the drawings, in particular the 3 - 7 and 15 , described in detail.

The helmet shell 36 is formed as a one-piece plastic molding. A suitable plastic for the helmet shell 36 is z. B. ABS. In 3 is the helmet shell 36 in a longitudinal sectional view, equipped with the interior trim assembly 40 , shown. 4 shows the helmet shell 36 to 3 without the interior trim assembly 40 in a view from below. 5 shows the helmet shell after 4 in perspective in one View at an angle from below. 6 shows in an exploded view and partially in section the protective helmet 30 , where in this illustration above the helmet shell 36 and above that the ventilation slide 50 are visible. 7 shows the safety helmet 30 to 6 in a bottom view in the assembled state, in which the face shield 32 , the clamping unit 48 and hearing protection 34 are shown at a distance from the helmet. The helmet shell 36 is forward so far forward that it also fulfills the function of a screen above the eyes. The helmet shell 36 This has in its front area in the rearward direction a uniformly rising outer surface without any significant gradation, so that it offers no Einhakpunkte obstacles such as branches. On the inner surface of the helmet shell 36 are in the front and middle helmet area transverse reinforcing ribs 62 formed. Transverse to the reinforcing ribs 62 and in the middle is one in the longitudinal direction of the helmet 30 extending reinforcing rib 64 formed. The reinforcing ribs 62 and 64 are in the 3 and 4 best to recognize. In the middle area close the reinforcing ribs 62 . 64 to a slightly recessed area, which has six groups of vents 52 having. In the recessed area is on the outer surface of the helmet shell 36 the ventilation slide 50 slidably disposed, which with downwardly and inwardly projecting holding nubs 68 in two front guide slots 66 and with two holding nubs 70 in two rear guide slots 72 surrounds. The ventilation slide 50 has congruent vents 53 ( 6 ), located in the ventilation position above the vents 52 are located and offset in the closed position so that the vents 52 through the ventilation slide 50 are closed. The lower edge of the helmet 30 is pulled sideways in the area of the temples and laterally in the area of the back of the head, as it is in the 5 and 11 can be seen. The above-mentioned free space 60 between the interior trim assembly 40 and the helmet shell 36 is thus increased in these areas downwards. This facilitates the attachment of fasteners on the inside of the helmet shell 36 and stowing the earmuffs 35a . 35b in the open space 60 what the illustration in 11 clarified and what is described in more detail below.

In the aforementioned temple area are on the inside of the helmet shell 36 on each side three rod-like projections 74a respectively. 74b molded on which the interior trim assembly 40 with the carrying arms 54 respectively. 55 positively and releasably fastened. The rod-like projections 74a . 74b are in a side view in 5 , in a plan view in 4 (right) and in a sectional view in 15 to recognize. The rod-like projections 74a . 74b are each in cross-section square hollow profile parts, with a foot area on the inside of the helmet shell 36 are formed. In their opposite to the foot area area are the rod-like projections 74a . 74b free in front of the inner surface of the helmet shell 36 standing arranged. The connection of the rod-like projections 74 to the inside of the helmet shell 36 and their transition to the helmet shell in the adjacent region of the junction in a respective triangular gusset is by additional molded ribs between the rod-like projections 74a . 74b and the helmet shell 36 stiffened so that the rod-like projections 74a . 74b with the helmet shell 36 are essentially rigidly connected. If on the rod-like projections 74a . 74b a force is exerted transversely to its longitudinal direction, which tends to bend the rod-like projections, so are the rod-like projections 74a . 74b anxious, the helmet shell 36 deform accordingly. The purpose of this embodiment is further below in connection with the description of the fitting of the trim assembly 40 on the helmet shell 36 explained in more detail.

At the far end is the helmet shell 36 at the bottom in the middle with a recess 76 provided behind the fully assembled helmet 30 the clamping unit 48 of the neck band 46 located and so for a manual operation to tighten or relax the neck band 46 is accessible.

For locking the support arm 56 on the helmet shell 36 this is in the back of the head with a slot 78 provided in which the correspondingly shaped free end of the support arm 56 ( 2 ) can snap releasably, as it is in the 7 and 15 can be seen. When the support arm is engaged 56 are located on the support arm 56 trained protrusions 56a . 56b outside the helmet shell 36 and lie on the outer surface, so that at one of the top of the helmet shell 36 applied force of the support arm 56 is loaded on train.

A fastening device 80 for hearing protection 34 has two hearing protection camp points 80a . 80b inside the helmet shell 36 on. The hearing protection camp points 80a . 80b are pivot bearings that are attached to the helmet shell 36 formed inside or, preferably, are permanently attached as additional parts. In the ear protection camp points 80a . 80b be carrying straps 37a . 37b with ear protection capsules 35a respectively. 35b pivotally mounted, which is described in more detail below.

A fastening device 84 for the face protection 32 points inside the helmet shell 36 two faceguard bearing points 84a . 84b on. In the face protection dumps 84a . 84b are two holding arms 132a . 132b a visor 132 pivoted. The face protection bearing points 84a . 84b are not on the inside of the helmet shell 36 molded, but each on a plug 136a respectively. 136b , each on the rod-like projections 74a respectively. 74b be attached, so at the same time the free ends of the support arms 54 . 55 to set on the rod-like projections. The face protection bearing points 84a . 84b are located with their associated plugs 36a respectively. 36b in the assembled state in the free space 60 , in an area where the helmet shell 36 pulled down at its lower edge, as already explained above.

The interior equipment for the safety helmet 30 is described below with reference to the drawings, in particular the 1 - 3 . 6 and 12 described in detail. The interior trim assembly 40 is the part of the safety helmet 30 which touches the head, and consists of the carrying basket 42 , the headband 44 and the neckband 46 that with the clamping unit 48 equipped. The assembly 40 is at the in the 3 and 6 shown helmet shell 36 fixable to the helmet 30 to support and hold on the head of a wearer.

1 shows in perspective and in a view obliquely from below the interior trim assembly 40 the safety helmet 30 according to the invention. 2 shows the interior trim assembly 1 in a view diagonally from above. 3 shows in a longitudinal sectional view of the interior trim assembly 40 to 1 inserted into the helmet shell, also shown in longitudinal section 36 the safety helmet 30 , 6 shows an embodiment of the protective helmet 30 in which this one with a face and a hearing protection 32 respectively. 34 is provided, in exploded view and partly in section. 12 shows the interior trim assembly 40 the safety helmet 30 where two ends of the neck band 46 in the neck area by the clamping unit 48 are detachably connected.

The basket 42 is molded from a rigid, resiliently flexible material, preferably from a plastic such as polyamide. The carrying head 42 is in two temporal areas as well as in the occipital area each with a rigid, obliquely downwardly or rearwardly projecting support arm 54 . 55 respectively. 56 provided to a three-point attachment of the interior of the helmet shell 36 and to make it possible in the helmet shell 36 continuously around the interior extending free space 60 for hearing protection capsules 35a . 35b and other helmet accessories and fasteners 80 . 84 for the face and hearing protection 32 respectively. 34 , The basket 42 is made in the embodiment described here as a one-piece plastic molded part. The basket 42 is made of two pairs of mutually spaced support strips 142 . 144 formed, according to the representation in 2 cross in the middle and with its lower ends to four connection points 146a . 146b . 146c . 146d in a single, circumferentially closed carrier strip 148 pass. In 1 are the carrier strips 142 . 144 through a cross-shaped cushioning piece of material 149 covered.

The support arms 54 . 55 . 56 collar at the connection points 146a . 146b . 146c from the basket 42 out. If it is assumed that the carrying strips 142 and 144 between the connection points 146a . 146b respectively. 146c . 146d in an arc, preferably substantially a circular arc, extend, so the support arms collar 54 . 55 respectively. 56 each substantially tangential to the relevant sheet of the basket 142 downwards or backwards, as it is in the 15 respectively. 2 can be seen. In the embodiment described here are the support arms 54 . 55 . 56 on the circumferentially closed carrier strip 148 formed. The headband 44 is to the basket 42 molded as it is in 2 can be seen. The neckband 46 has two front ends, with rear free ends of the headband 44 are releasably connected, for example, by a not shown in the figures detent connection. The neckband 46 has as shown in the 1 to 3 two free ends, which are releasably connectable to each other in the neck region, with the help of the clamping unit 48 as it is in 12 can be seen. The neckband 46 can be made of the same material as the carrying basket 42 be shaped. The neckband 46 is between his connections with the headband 44 and its free ends each height adjustable to the basket 42 connected, as for example in the 1 and 2 can be seen. For this the carrying basket points 42 two downwardly projecting support arms 47a . 47b on where the neck band 46 each fixable in selectable height. The neckband 46 has three superimposed holes on each side 51 , which at one on each support arm 47a . 47b protruding resilient bolt 49 ( 6 ) are latched, as it is in the 1 and 2 can be seen.

In the embodiment described above, the support arms 54 . 55 Although different on the helmet shell 36 attached as the support arm 56 but that is not necessary. The support arms 54 . 55 can also work in the same way as the support arm 56 be attached to the helmet shell. It is only necessary that the support arms 54 . 55 same fixative as the support arm 56 have, which allow the support arms 54 . 55 to engage with the helmet shell in a form-fitting manner. In this case, then the fixing means of the support arms 54 . 55 also locking means which z. B. in slots in the helmet shell 36 be introduced to the carrying arms 54 . 55 like the arm 56 to fix the helmet shell by means of a locking connection.

The headband 44 is at a distance from the circumferentially closed support strip 148 over connection strips 150 at the circumferentially closed carrier strip 148 formed. The support arms 54 . 55 . 56 and the support arms 47a . 47b are by molded ribs 152 respectively. 154 additionally stiffened.

The cantilevered down in the two temple areas support arms 54 . 55 have means for fixing inside the helmet shell 36 on. The fixing means comprise on each of the support arms 54 . 55 three through holes 156 respectively. 158 that with the rod-like projections 74a respectively. 74b on the helmet shell 36 are positively engageable engageable. The back-projecting to the rear cantilever arm 56 of the carrying basket 42 has the projections 56a . 56b which, as already explained above, a locking device for releasably fixing the interior trim assembly 40 on the helmet shell 36 form.

Finally, according to 2 on the basket 42 a device 88a . 88b designed for attachment of a chin strap, not shown. The chin strap attachment device 88a . 88b includes two pivot pins 90a . 90b , which, in addition to the support arms projecting downwards in the two temporal areas 54 . 55 at the circumferentially closed carrier strip 148 of the carrying basket 42 or, as shown, on a circumferentially-closed support strip 148 attachable adapter 89a . 89b are formed.

In industrial and forestry helmets, the attachment of the chin strap to the helmet shell (not shown) or to the basket. The attachment of the chin strap takes place in mountaineering helmets only on the helmet shell.

The mutual connection of the helmet shell 36 and the interior trim assembly 40 which has already been partially described above with reference to FIG 2 . 3 and 15 summarized and supplemented explained. 2 shows the interior trim assembly 40 in perspective and in a view obliquely from above. 3 shows in a longitudinal sectional view of the interior trim assembly 40 inserted into the helmet shell, also shown in longitudinal section 36 the safety helmet 30 , wherein the clamping unit 48 on the neckband 46 not shown.

15 shows the safety helmet 30 in a sectional view along the line XV-XV in 3 , wherein the clamping unit 48 is also shown. In 2 are formed as spacers support arms 55 and 56 to recognize. The second downwardly projecting arm 55 is in 2 not visible. The support arm 55 is in 3 to be seen in an interior view. In 15 are the support arms 54 and 55 shown in section. For three-point attachment of the interior trim assembly 40 on the helmet shell 36 becomes the rearwardly projecting arm 56 in the slot 78 pushed in the helmet shell until the projections 56a . 56b Lock on the outside of the helmet shell. Then the interior trim assembly 40 continue inward towards the inner surface of the helmet shell 36 moved, with the support arms 54 and 55 over the rod-like projections 74a respectively. 74b be overstretched. At the same time take through openings 156 and 158 in the arms 54 and 55 the rod-like projections 74a respectively. 74b form-fitting on how it is in 15 can be seen. When the support arms 54 . 55 in the gusset between the helmet shell 36 and the rod-like projections 74a . 74b resting on the helmet side, the plugs are 136a and 136b ( 4 and 5 ) on the rod-like projections 74a respectively. 74b attached so as to support arms 54 and 55 in their position to fix. The interior trim assembly 40 and the helmet shell 36 are now firmly connected in three points. Once the safety helmet 30 put on the head and with the help of the clamping unit 48 If necessary, a chinstrap (not shown) may be tightened under the chin. The passage openings 156 . 158 in the arms 54 . 55 capture the rod-like projections 74a respectively. 74b each on a length which is at least as large as the clear width of the through holes 156 . 158 is. If by a load of the helmet 30 from above a force on the support arms 54 . 55 . 56 is exercised, the support arms through the helmet shell 36 , which is supported on the ends of the support arms, loaded on train. Through this on the support arms 54 . 55 . 56 acting force is generated in each of the three points a moment endeavoring to wear the helmet shell 36 to deform inwards to the lower edge. The helmet shell 36 thus converts a portion of the force acting on them in deformation energy, thus reducing the force on the person wearing the helmet. The transmission of the moment from the support arms 54 . 55 . 56 on the helmet shell 36 is further reinforced by the fact that the support arms by molded ribs 152 additionally stiffened.

The following is the ear protection 34 including its attachment device 80 with reference to the drawings, in particular the 4 - 11 , described in more detail. 4 shows in a view from below the helmet shell 36 without the interior trim assembly 40 , in particular, the location of the hearing protection camp points 80a . 80b on the inside of the helmet shell 36 can be seen. 5 shows the helmet shell 36 to 4 in a perspective view in a view obliquely from below. 6 shows the safety helmet 30 in auserindergezogener representation and partly in section, with the hearing protection 34 can be recognized in association with the other home accessories. 7 shows the safety helmet 30 in a bottom view, in which the hearing protection 34 is shown at a distance from the helmet. The mirror image on the opposite side of the helmet 30 existing hearing protection 34 is in 7 have been omitted for clarity. 8th shows the safety helmet 30 with ear protection on both sides 34 , where the helmet shell 36 in cross-section and the ear protection 34 folded away from the ears are shown. 9 shows the protective helmet 8th , but with the hearing protection 34 flipped to the ears is shown. 10 shows the protective helmet 9 in a side view. 11 shows the protective helmet 10 , but with the hearing protection 34 pivoted to the rear in a parking position and stowed under the helmet shell is shown.

The hearing protection 34 includes two ear protection capsules 35a . 35b , each in a fork-like mounting bracket 37a respectively. 37b are pivotally mounted. The helmet shell 36 is on its inside with the fixed ear mounts 80a . 80b provided as it is in 4 can be seen. In 6 is the ear protection camp point 80b although together with the basket 42 However, this bearing point is as well as the hearing protection point 80b inside the helmet shell 36 and not on the carrying basket 42 appropriate. The representation in 6 should only illustrate where in the room the hearing protection camp point 80b in relation to the carrying basket 42 the interior trim assembly 40 located. In the storage points 80a . 80b are the mounting brackets 37a . 37b that with the earmuffs 35a respectively. 35b are pivoted, as it is in the 10 and 11 can be seen. The hearing protection camp points 80a . 80b and the mounting brackets 37a . 37b are arranged and designed so that the mounting bracket 37a . 37b in the open space 60 be pivoted between two positions, one in the 9 and 10 shown operating position in which the ear protection capsules 35a . 35b cover the ears, and one in 11 shown parking position in which the ear protection capsules 35a . 35b in the open space 60 in the helmet shell 36 stowed.

Each mounting bracket 37a . 37b is in an area between its two ends, in which he is in the open space 60 extends, formed spring-loaded kinkable, so that the ear protection capsules 35a . 35b in not bent position of each support bracket 37a . 37b each folded away from the ear as it is in 8th is shown, and in the bent position of the support bracket 37a . 37b each folded to the ear, as it is in 9 is shown. If the safety helmet 30 not put on the head, reach the two ear defenders 35a . 35b in the latter part each a position which is located substantially further inwardly than the ear, to which each hearing protection capsule 35a . 35b should create. In other words, the mutual distance of the earmuffs in this case is much smaller than the mutual distance of the ears. This ensures that when the helmet is attached 30 the earmuffs 35a . 35b be held pressed by the Federvorbelastung to the ears. The spring preload for kinking each support bracket 37a . 37b between two defined positions takes place by an annular bent bow spring 92a . 92b (the latter is in 6 to recognize). Each mounting bracket 37a . 37b can be moved by hand in a bent and in a non-bent position. In each of these positions causes the bow spring 92a respectively. 92b an end-position lock. The end position lock of the mounting bracket 37a . 37b is not achieved with the helmet on, because, as I said, each hearing protection capsule 35a . 35b resiliently pressed against the ear should be kept.

In addition, each ear protection point is 80a . 80b and every mounting bracket 37a . 37b designed so that the mounting bracket only from the in 8th shown position can be pivoted backwards. This ensures that the earmuffs 35a . 35b can be stowed in the space behind the ear, without the ears and the lower edge of the helmet shell 36 to collide.

The following is the face protection 32 with reference to the drawings, in particular the 6 . 7 and 17 - 20 , described in more detail. 6 shows the safety helmet 30 in an exploded view and partly in section, with the face shield 32 can be recognized in association with the other helmet accessories. 7 shows the safety helmet 30 in a bottom view, in which a visor 132 of the face protection 32 is shown at a distance from the helmet. 17 shows the safety helmet 30 , where the visor 132 opened. 18 is a cross-sectional view of the helmet after 17 looking towards the rear. 19 shows the protective helmet 17 in a broken view looking towards the front. 20 shows a side view of an embodiment of the protective helmet 30 that except with the face shield 32 with the hearing protection 34 and one in the occipital area on the neck band 46 attached clamping unit 48 is provided.

The face protection 32 includes the visor 132 with the two holding arms 32a . 32b as well as two plugs 136a . 136b in which as a fastening device 84 for the face protection 32 one face protection bearing point each 84a respectively. 84b is formed. The plugs 136a . 136b be on the rod-like projections 74a respectively. 74b plugged, causing the face protection bearing points 84a . 84b in the temple area on the inside of the helmet shell 36 to lie come. The plug 136b with the face protection bearing point 84b is in 4 to recognize. The oppositely arranged plug 136a with the face protection bearing point 84a is in 4 Not shown. Every face protection camp point 84a . 84b has three axially projecting, elastically flexible cams 85a respectively. 85b on, over which the holding arms 132a . 132b with ring bearing bushes 134a . 134b are slidable to the retaining arms 132a . 132b in the facial protection camp points 84a . 84b releasably and pivotally attach. The face protection bearing points 84a . 84b and the holding arms 132a . 132b are arranged and designed so that each support arm 132a . 132b in the open space 60 is pivotable between two positions, an operating position in which the visor 132 folded down and protects the face ( 20 ), and a parking position in which the visor 132 folded up and snugly on the outer surface of the helmet shell 36 is arranged ( 17 and 19 ). The fastening device 84 for the face shield contains a self-locking bracket for each arm 132a . 132b , Each plug contains this 136a . 136b a spring-biased bolt, which on the retaining arms 132a . 132b attached ring bearing bush 134a respectively. 134b resiliently biased in the operating position or in the park position holds.

The visor 132 forms with each holding arm 132a . 132b a fork ( 6 ), in which with the visor ( 17 ) the wall of the helmet shell 36 is closely recorded. With the visor closed 132 this is located with its upper edge on the front edge of the helmet shell 36 on, and the lateral edges of the visor 132 lie against the outer surface of the helmet shell. Therefore, there is no possibility, either with the visor closed or open, that branches in the use of the helmet, for example in forestry work, on the support arms 132a . 132b or on the visor 132 hook yourself and endanger the home carrier.

The following is the clamping unit 48 described in more detail. The clamping unit 48 is next to the hearing protection 34 other helmet accessories, like the ear protection 34 always within the outline of the helmet shell 36 is, so that too in the area of the clamping unit 48 there are no protruding parts where obstacles could get caught. The clamping unit 48 is with reference to the drawings, in particular the 12 - 16 , described. 12 shows a side view of the interior trim assembly 40 the safety helmet 30 in which the two ends of the neck band 46 in the neck area by the clamping unit 48 are detachably connected. 13 shows in a side view of the helmet 30 the interior trim assembly after 12 built into the helmet shell 36 , wherein the clamping unit 48 as in 12 is shown in the tensioned state. 14 shows the protective helmet 13 in a view from below. 15 shows a cross-sectional view of the helmet 30 in the direction of the back. 16 shows in a partially broken view the helmet 30 to 13 looking towards the front.

The clamping unit 48 includes a bracket 168 , in which the free ends of the neckband 46 are introduced on both sides. The holder 168 has angular nubs, which with square openings 176 of the neck band 46 can be brought into engagement. In this way, the length of the neckband 46 coarsely adjustable according to the head size. The adjustment is expedient so that the protective helmet 30 can be easily placed when not actuated clamping unit. Tensioning the neckband 46 after the helmet 30 has been placed, then done with the help of the clamping unit 48 , as explained below.

As shown in 14 are the support shell 172 and the holder 168 through a transmission lever 169 hinged together. The transmission lever 169 is according to 14 at one end by means of a joint 170 on in 12 lower end of the support shell 172 connected. The transmission lever 169 is at the other end according to 16 by means of a joint 171 at one in the representation upper end of the holder 168 connected.

The operation of the clamping unit 148 done by a latch flap 174 according to 12 through a joint 173 to the holder 168 connected. The latch flap 174 is below the joint 173 on her the transmission lever 169 adjacent side provided with a cam not visible in the drawings. When the latch flap 174 is closed as it is in 12 is shown by the action of the cam on the transmission lever 169 the lower end of the bracket 168 from the joint 170 Panned backwards. This pivoting causes the tensioning of the neck band 46 , The clamping unit 48 it supports itself in the neck area at the back of the head by the supporting shell 172 from. The joint 171 is associated with a non-visible in the drawings spring between the holder 168 and the transmission lever 169 arranged so that the transmission lever 169 with the latch open 174 with his joint 170 towards the lower end of the bracket 168 is urged. In the area of the joint 170 is between the support shell 172 and the transmission lever 169 another spring (also not visible) effective, which endeavors, is the support shell 172 to urge into a position on a stop in which its upper end from the upper end of the holder 168 has moved away.

The operation of the clamping unit 48 done by the latch flap 174 , When the latch flap 174 pivoted clockwise and thus closed as it is in 12 is shown is the bracket 168 around the joint 171 pivoted, leaving the support tray 172 at her in the presentation in 12 bottom edge of the bottom edge of the bracket 168 Distance has. This is the cocked position of the clamping unit, which in the 12 - 14 can be seen. When the latch flap 174 pivoted counterclockwise and thus opened, the clamping unit 48 open. This may cause the lower edge of the bracket 168 towards the joint 170 on the support shell 172 move so that the neckband 46 relaxed and the safety helmet 30 can be set up and set down. If the safety helmet 30 has been placed, only needs the latch flap 174 to be folded down to the helmet 30 to fix on the head. This can be done comfortably with one hand and also with glove. The support shell 172 is on the front with a cushioning piece of material 180 busy.

LIST OF REFERENCE NUMBERS

30

helmet

32

face protection

34

ear protection

35a

Earmuff

35b

Earmuff

36

shell

37a

support bracket

37b

support bracket

40

Interior assembly

42

pannier

44

headband

46

neckband

47a

support arm

47b

support arm

48

clamping unit

49

bolt

50

ventilation slide

51

hole

52

vent

53

vent

54

Beam

55

Beam

56

Beam

56a

head Start

56b

head Start

60

free space

62

reinforcing rib

64

reinforcing rib

66

guide slot

68

Haltenoppe

70

Haltenoppe

72

guide slot

74a

rod-like projection

74b

rod-like projection

76

recess

78

slot

80

Fastening device Hearing protection

80a

Ear protection supporting point

80b

Ear protection supporting point

84

Fastening device face protection

84a

Face protection supporting point

84b

Face protection supporting point

85a

cam

85b

cam

88a

Fastening device chinstrap

88b

Fastening device chinstrap

89a

connecting piece

89b

connecting piece

90a

articulation pivot

90b

articulation pivot

92a

bow spring

92b

bow spring

132

visor

132a

holding arm

132b

holding arm

134a

Ring bearing bush

134b

Ring bearing bush

136a

plug

136b

plug

142

carrying strips

144

carrying strips

146a

junction

146b

junction

146c

junction

146d

junction

148

carrying strips

149

upholstery

150

connecting strips

152

ribs

154

ribs

156

Through opening

158

Through opening

168

Support for support shell

169

transmission lever

170

joint

171

joint

172

support shell

173

joint

174

transom flap

176

openings

180

Upholstered piece of material

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 8714490 U1 [0002]
• DE 2826636 C2 [0003]
• DE 2907056 A1 [0003]
• DE 3314595 C2 [0003]
• DE 3590667 C2 [0003]
• DE 9710596 U1 [0003]
• DE 29708134 U1 [0003]
• DE 102004004044 B4 [0005]
• DE 69811738 T2 [0006]
• WO 2005/027671 A1 [0007]

Claims (16)

Hard hat, especially for forestry workers, with a helmet shell ( 36 ), with an interior fitting comprising a head contacting assembly ( 40 ) at least from a carrying basket ( 42 ), a headband ( 44 ) and a neckband ( 46 ) and means for securing this assembly ( 40 ) on the helmet shell ( 36 ), characterized in that the fastening means at least three support arms formed as spacers ( 54 . 55 . 56 ) and that the helmet shell ( 36 ) is dimensioned so and the support arms ( 54 . 55 . 56 ) are dimensioned and arranged such that between the interior trim assembly ( 40 ) and the helmet shell ( 36 ) a free space ( 60 ) is present for receiving hearing protection capsules ( 35a . 35b ) and carrying straps ( 37a . 37b ) and other home accessories and fasteners ( 80 . 84 ) at least for face and ear protection ( 32 . 34 ). Protective helmet according to claim 1, characterized in that the carrying basket ( 42 ) is formed of a stiff, elastically flexible material and that the support arms ( 54 . 55 . 56 ) rigidly and on the carrying basket ( 42 ) are formed in two temporal regions and in the occipital region and are separated from the 42 ) each project obliquely downwards or to the rear and each with their free ends on the helmet shell ( 36 ) are attached. Protective helmet according to claim 1 or 2, characterized in that the fastening device ( 80 ) for hearing protection ( 34 ) two hearing protection points ( 80a . 80b ) inside the helmet shell ( 36 ), in which mounting bracket ( 37a . 37b ) with ear protection capsules ( 35a . 35b ) are pivotally mounted. Protective helmet according to claim 3, characterized in that the hearing protection bearing points ( 80a . 80b ) and the mounting brackets ( 37a . 37b ) are arranged and designed so that the mounting bracket ( 37a . 37b ) in the open space ( 60 ) are each pivotable between two positions, an operating position in which the earmuffs ( 35a . 35b ) cover the ears, and a parking position in which the earmuffs ( 35a . 35b ) in the open space ( 60 ) are stowed. Protective helmet according to one of claims 2 to 4, characterized in that the fastening device ( 84 ) for the face protection ( 32 ) two face protection bearing points ( 84a . 84b ) inside the helmet shell ( 36 ), in which two retaining arms ( 132a . 132b ) of a visor ( 132 ) are pivotally mounted. Protective helmet according to claim 5, characterized in that the face protection bearing points ( 84a . 84b ) and the retaining arms ( 132a . 132b ) are arranged and formed so that the retaining arms ( 132a . 132b ) in the open space ( 60 ) are each pivotable between two positions, an operating position in which the visor ( 132 ) protects the face, and a parking position in which the visor ( 132 ) close to the outer surface of the helmet shell ( 36 ) is arranged. Protective helmet according to one of claims 2 to 6, characterized in that the carrying basket ( 42 ) has at its lower edge a circumferentially closed support strip, to which the support arms ( 54 . 55 . 56 ) are formed. Protective helmet according to claim 7, characterized in that the neckband ( 46 ) on the carrying basket ( 42 ) and has two ends, which in the neck area by a clamping unit ( 48 ) are releasably connected, which as another helmet accessories in the open space ( 60 ) is recorded. Protective helmet according to claim 8, characterized in that the tensioning unit ( 48 ) has a support shell which during tensioning of the neck band ( 46 ) with the help of a latch flap against the back of the head of a helmet ( 30 ) is tensionable. Protective helmet according to one of claims 2 to 9, characterized in that in the two temple areas downwardly projecting support arms ( 54 . 55 ) Means for releasable fixation inside the helmet shell ( 36 ) exhibit. Protective helmet according to claim 10, characterized in that the fixing means on each of the downwardly projecting support arms ( 54 . 55 ) are designed so that they with the helmet shell ( 36 ) are positively engageable engageable. Protective helmet according to one of Claims 2 to 11, characterized in that the support arm projecting rearwardly in the occipital area ( 56 ) a locking device ( 56a . 56b ) for fixing to the helmet shell ( 36 ) having. Protective helmet according to claim 5, characterized in that the face protection bearing points ( 84a . 84b ) as a plug ( 136a . 136b ) are formed above the support arms ( 54 . 55 ) on the rod-like projections ( 74a . 74b ) are plugged. Protective helmet according to claim 11, characterized in that the passage openings ( 156 . 158 ) the rod-like projections ( 74a . 74b ) each at a length which is at least as large as the inside diameter of the passage openings ( 156 . 158 ), so that by loading the helmet ( 30 ) from above on the support arms ( 54 . 55 . 56 ) applied force on the support arms ( 54 . 55 . 56 ) one moment endeavor, the home shell ( 36 ) to inwardly deform to the lower edge. Protective helmet according to one of claims 1 to 14, characterized in that the carrying basket ( 42 ) two downwardly projecting support arms ( 47a . 47b ), at which the neckband ( 46 ) can be fixed in each case in selectable height. Protective helmet according to claim 15, characterized in that the support arms ( 54 . 55 . 56 ) and the support arms ( 47a . 47b ) by molded ribs ( 152 ) are additionally stiffened.

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